1869248 - repeating-linear-gradient breaks when used with large color stops

Status: UNCONFIRMED

(Core :: Graphics: WebRender, defect)

Description

[csprle]

Attachment: firefox.png

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Steps to reproduce:

background: repeating-linear-gradient(
0deg,
green 0px 1px,
transparent 1px 300px
);

This does not render a 1px green line.

https://codepen.io/csprle-the-bashful/pen/ExrJPvq

Actual results:

When applying a repeating-linear gradient with color stops at 1px and one greater than ~190px the 1px line is either bigger than 1px or is not being shown.

Expected results:

There should be a line 1px height shown, independent from the second color stop height. This is the case in other browsers I tested.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The severity field is not set for this bug.
:gw, could you have a look please?

For more information, please visit BugBot documentation.

Comment 2

[Glenn Watson [:gw]]

Nical, any ideas what would cause this?

Comment 3

[Nicolas Silva [:nical]]

I'm keeping the needinfo, but I won't have time to investigate for a while.